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Finding the Fourth Proportional to 98,190.70, 135,504.06 and 55,750.13

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Solution

The fourth proportional to 98,190.70, 135,504.06 and 55,750.13 is: 76,935.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,190.70 : 135,504.06 = 55,750.13 : x
  2. Step 2: Convert to fraction form
    98,190.70/135,504.06 = 55,750.13/x
  3. Step 3: Cross multiply
    98,190.70x = 135,504.06 × 55,750.13
  4. Step 4: Simplify right side
    98,190.70x = 7,554,368,960.53
  5. Step 5: Solve for x
    x = 7,554,368,960.53/98,190.70
  6. Step 6: Final answer
    x = 76,935.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.